Leon turned around and headed toward the exit of the castle, he didn't feel like training his resistances, and he didn't feel like looking at her face even for a second. She was dead wrong to think that an apology would make up for her actions.

After leaving the castle, Leon created a human-size steel statue and started to punch it. He needed to relieve some of his anger before he could waste more time dealing with his anger. Leon also activated Regeneration because it was obvious that even though he could damage even steel, his fists wouldn't last long.

Congratulations! The skill Rage has leveled up.

You obtained 01 status points.

Congratulations! The skill Pain Resistance has leveled up.

You obtained 01 status points.

Congratulations! The skill Martial Art has leveled up.

You obtained 01 status points.

Congratulations! The skill Iron Fists has leveled up.

You obtained 01 status points.

"That is certainly a way to kill time," Undine said. "Lucky for you, there is a lot of blue angel leaves that you will have to eat to regain your normal weight."

Instead of stopping because he couldn't withstand eating more leaves than he already had to, Leon stopped because Undine was concerned about him in her own way. Maybe the fact that Leon only left the leaves while he was on that planet played a small role in his decisions, but he decided to think that was thanks to Undine.

"... I guess it is time to learn a few more spells," Leon said after a long sigh. "Who wants to go first?"

"I want to!" Sylph shouted, and Leon felt almost as he went deaf, even though he was inside his head.

"Me! Me! Choose me!" Gnome said.

"I guess both of you will be good enough," Leon said. "I want to learn a few more spells like Magma Spear. It will be difficult to learn, but it will be useful since the power behind it will be absurd."

Leon thought it would be hard to learn a spell that had the properties of earth and wind at the same time since the teachers were Sylph and Gnome, but much to his surprise, they already knew several ones. Even though they never showed to Leon or talked about it, the spirits could combine their powers with ease.

Congratulations! You have learned the skill: Quicksand.

Cost: 30 mana per second

You obtained 01 status points.

Congratulations! You have learned the skill: Punishment.

Cost: 50 mana per second

You obtained 01 status points.

Congratulations! You have learned the skill: Sand Cloud.

You obtained 01 status points.

Quicksand was self-explanatory. Although it was useless against opponents that could fly, Gravity could help with that. Punishment was a small sand tornado that caused damage thanks to the tiny shards of earth that were created inside of it. Sand Cloud was precisely that, a cloud of sand that could blind several enemies completely.

"Are you not going to level them up against the mechanical spiders?" Celsius asked when she saw Leon using the spells several times without a target.

"Nope, I can't keep owing favors to her," Leon said. "Otherwise, she will put me in those annoying situations again.

"Are you fine saying that out loud?" Celsius asked again.

"Even if I try to hide, what I think and feel are clear," Leon said. "It won't change anything by saying that out loud or not. Come to think of it... I can level up my resistances and train these spells pretty fast. I just have to use it against myself."

"Self-harm, huh?" Celsius asked, and she seemed troubled. "That is a dangerous path, be careful, or you will become one of those who treats pain like some kind of god."

"I can't see the difference between doing that myself or just letting someone do the damage for me," Leon shrugged.

Maybe Leon was just overthinking, but owing a favor to others and repaying favors was one of the reasons why he felt bored and sometimes annoyed while training. He didn't have the freedom he always had. Maybe it was his anger that was making him think that, but Leon never felt like that when he was training alone with a single goal in mind. Since he was always working alone, Leon never had to worry about other people's goals or schemes. It if didn't affect him, he could ignore it. If it was troublesome, then crush it. It was a pretty simple and good lifestyle. Maybe that was he truly obtained after those four years... simplicity.

"Before I forget... I need to learn some debuffs and curses. I needed them in that world."

It was much more practical using curses to stop an enemy for several hours than using a mithril shackle. Even though Leon could consume the mithril, some mana was always wasted, after all.

Congratulations! You have learned the skill: Cursed Ray.

Cost: 100 mana

Cooldown time: 10 seconds.

You obtained 01 status points.

Congratulations! You have learned the skill: Blind.

Cost: 50 mana per second

Cooldown time: 10 seconds.

You obtained 01 status points.

Congratulations! You have learned the skill: Coward's Curse.

Cost: 50 mana per second

Cooldown time: 10 seconds

You obtained 01 status points.

Surprisingly, tomes that taught curses were quite expensive. Still, their effects would be useful as long as the enemy doesn't have a high resistance to curses.